US2996378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical resistance wire
Assignee: Molecu-Wire Corp
•
Filing: 1958-09-16
•
Granted: 1961-08-15
•
Expires: 1978-09-16
Abstract
No abstract record available.
Inventors
- 👤 Edward E Edmunds
- 👤 Arthur S Lichter
- 👤 Poch Stephen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:30
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/02; C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/058
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
AN ELECTRICAL RESISTANCE WIRE HAVING A SPECIFIC RESISTANCE OF AT LEAST 800 OHMS PER CMF. AND A TEMPERATURE COEFFICIENT OF RESISTIVITY OF AT MOST .00002 OHM PER OHM *C. OVER A TEMPERATURE RANGE OF FROM MINUS 85*F. TO PLUS 482*F. SAID WIRE COMPRISING A NICKEL-BASE ALLOY CONSISTING ESSENTIALLY OF BETWEEN ABOUT 10% AND 30% CR, BETWEEN ABOUT 2% AND 4% AL, BETWEEN ABOUT 1% AND 4% CO AND THE BALANCE, EXCEPT FOR IMPURITIES AND RESIDUALS, NICKEL WHICH WIRE HAS BEEN SUBJECTED TO A PLURALITY OF COLD WORKINGS, EACH FOLLOWED BY AN ANNEAL AT A TEMPERATURE BETWEEN ABOUT 1900*F. AND 2150*F. TO RECRYSTALLIZE THE COLD WORKED PRODUCT; AND WHICH WIRE HAS BEEN THEREAFTER SUBJECTED TO A FURTHER HEAT TREATMENT AT A TEMPERATURE BETWEEN ABOUT 800*F. AND 1200*F. FOR AN INTERVAL BETWEEN ABOUT 15 MINUTES AND 45 MINUTES TO DEVELOP AN ELECTRICAL RESISTANCE WIRE PRODUCT HAVING A SPECIFIC RESISTANCE OF AT LEAST 800 OHMS AND A TEMPERATURE COEFFICIENT OF RESISTIVITY BELOW 0.00002 OHM PER OHM PER DEGREE CENTIGRADE.
Claim 2
Dependent Claim
166 words
AN ELECTRICAL RESISTANCE WIRE HAVING A SPECIFIC RESISTANCE OF AT LEAST 800 OHMS PER CMF. AND A TEMPERATURE COEFFICIENT OF RESISTIVITY OF AT MOST .00002 OHM PER OHM *C. OVER A TEMPERATURE RANGE OF FROM MINUS 85*F. TO PLUS 482*F. SAID WIRE COMPRISING A NICKEL-BASE ALLOY CONSISTING ESSENTIALLY OF BETWEEN ABOUT 10% AND 30% CR, BETWEEN ABOUT 2% AND 4% AL, BETWEEN ABOUT 1% AND 4% CO AND THE BALANCE, EXCEPT FOR IMPURITIES AND RESIDUALS, NICKEL WHICH WIRE HAS BEEN SUBJECTED TO A PLURALITY OF COLD WORKINGS, EACH FOLLOWED BY AN ANNEAL AT A TEMPERATURE BETWEEN ABOUT 1900*F. AND 2150*F. TO RECRYSTALLIZE THE COLD WORKED PRODUCT; AND WHICH WIRE HAS BEEN THEREAFTER SUBJECTED TO A FURTHER HEAT TREATMENT AT A TEMPERATURE BETWEEN ABOUT 800*F. AND 1200*F. FOR AN INTERVAL BETWEEN ABOUT 15 MINUTES AND 45 MINUTES TO DEVELOP AN ELECTRICAL RESISTANCE WIRE PRODUCT HAVING A SPECIFIC RESISTANCE OF AT LEAST 800 OHMS AND A TEMPERATURE COEFFICIENT OF RESISTIVITY BELOW 0.00002 OHM PER OHM PER DEGREE CENTIGRADE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |